Troubleshooting
Continued
OBSERVED PROBLEM POSSIBLE CAUSE | REMEDY |
ODS/pilot lights but flame goes out when control knob is released
1.Control knob not fully pressed in
2.Control knob not pressed in long enough
3.Equipment shutoff valve not fully open
4.Pilot flame not touching thermocouple, which allows thermocouple to cool, caus- ing pilot flame to go out. This problem could be caused by one or both of the following:
A)Low gas pressure
B)Dirty or partially clogged ODS/pilot
5.Thermocouple connection loose at control valve
6.Thermocouple damaged
7.Control valve damaged
1.Press in control knob fully
2.After ODS/pilot lights, keep control knob pressed in 30 seconds
3.Fully open equipment shut- off valve
4.A) Contact local natural or propane/LP gas company
B)Clean ODS/pilot (see Cleaning and Maintenance, page 24) or replace ODS/ pilot assembly
5.Hand tighten until snug, then tighten 1/4 turn more
6.Replace pilot assembly
7.Replace control valve
Burner does not light after | 1. Inlet gas pressure is too | 1. | Contact local natural or | |
ODS/pilot is lit |
| low |
| propane/LP gas company |
| 2. | Burner orifice(s) clogged | 2. | Cleanburner(s)(seeCleaning |
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| and Maintenance, page 24) |
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| or replace burner orifice(s) |
| 3. | Thermopile leads disconnect- | 3. | Reconnect leads (see Wir- |
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| ed or improperly connected |
| ing Diagram, page 29) |
| 4. | Burner will not come on in | 4. | Replace battery in transmit- |
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| remote position |
| ter and receiver |
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| |
Delayed ignition of one or | 1. Manifold pressure is too | 1. | Contact local natural or | |
both burners |
| low |
| propane/LP gas company |
| 2. | Burner orifice(s) clogged | 2. | Clean burner(s) (see |
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| Cleaning and Maintenance, |
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| page 24) or replace burner |
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| orifice(s) |
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| |
Burner backfiring during | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | |
combustion |
| damaged |
| and Maintenance, page 24) |
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| or replace burner orifice(s) |
| 2. | Damaged burner | 2. | Replace damaged burner |
| 3. | Gas regulator defective | 3. | Replace gas regulator |
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Slight smoke or odor during | 1. Not enough air | 1. | Check burner for dirt and | |
initial operation |
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| debris. If found, clean |
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| burner (see Cleaning and |
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| Maintenance, page 24) |
| 2. | Gas regulator defective | 2. | Replace gas control |
| 3. | Residues from manufac- | 3. | Problem will stop after a few |
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| turing processes and logs |
| hours of operation |
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| curing |
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26 | www.desatech.com |